Home > News > Counterfeiting Countermeasures
June 11th, 2007
He sees a lot of potential in nanotechnology, including nanocrystals that can be used to make pigments that aren't easy to duplicate and have spectral properties that can be easily verified by machine. "Unlike regular organic pigment molecules," he explains, nanocrystal pigments "have very narrow absorption windows." Nanocrystals made of semiconductor materials such as cadmium telluride and zinc sulfide or of metals such as gold and silver are already available. Color can be tuned by changing the size of the particles.
The committee also thinks lithography on a minute scale shows promise as a deterrent, Trevor says. Techniques including dip-pen lithography—in which the stylus of an atomic force microscope is used as a pen—could be used to print currency with text, images, or other patterns with dimensions in the nanometer to micrometer range. Such features could be viewed with a scanning optical microscope.
Editorial: Choices for Congress September 9th, 2010
Stephen Hawking - 'Don't Talk to Aliens' April 26th, 2010
It’s about damn time: Medvedev bans nanodemocracy April 15th, 2010
Savor maple syrup time in Ohio: Travel in 3s February 20th, 2010
Squeezing light into metals: University of Utah engineers control conductivity with inkjet printer March 7th, 2014
Up-Converted Radio: The way to treat radio waves in a noisy environment is to turn them into visible light March 7th, 2014
Colored diamonds are a superconductor’s best friend March 6th, 2014
Green Chemistry Method Used for Production of Palladium Nanocatalyst March 5th, 2014
Harry Potter-style invisibility cloaks: A real possibility next Christmas? Forget socks and shaving foam, the big kids of tomorrow want an invisible cloak for Christmas December 19th, 2013
Chicago Awareness Organization First Not-for-Profit to Sponsor Dog Training to Detect Ovarian Cancer Odorants December 12th, 2013
ZEISS Microscopes used to create images for Art Exhibit at Midway Airport: Art of Science: Images from the Institute for Genomic Biology October 25th, 2013
New potential for touch screens found at your fingertips September 17th, 2013